MOESM4 of High-throughput magnetic particle washing in nanoliter droplets using serial injection and splitting

Additional file 4: Video S3. High-speed video of stage one of droplet washing device. Input droplets generated at 50 Hz travelling from left to right contain a high concentration of bromophenol blue dye. 22 ¾m magnetic microparticles are seen loaded into droplets. Droplets are injected and magnetic microparticles marginate to the upper half of the droplet before splitting. The two daughter droplets are seen to have different absorbance indicating removal of dye from the input droplet.